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Principal gains and phases: insensitive robustness measures for assessing the closed-loop stability property

Principal gains and phases: insensitive robustness measures for assessing the closed-loop stability property

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In the paper, the use of principal gains and phases in assessing the robustness of the closed-loop stability property is examined. An improved version of the recently developed principal gain-phase method is presented, and conditions are derived under which the technique is insensitive to small perturbations.

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